<!-- HTML header for doxygen 1.8.8-->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <!-- For Mobile Devices -->
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
        <meta name="generator" content="Doxygen 1.8.18"/>
        <script type="text/javascript" src="https://code.jquery.com/jquery-2.1.1.min.js"></script>
        <title>HElib: /HElib/include/helib/tableLookup.h Source File</title>
        <!--<link href="tabs.css" rel="stylesheet" type="text/css"/>-->
        <script type="text/javascript" src="dynsections.js"></script>
        <link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></script>
        <link href="doxygen.css" rel="stylesheet" type="text/css" />
        <link href="customdoxygen.css" rel="stylesheet" type="text/css"/>
        <link href='https://fonts.googleapis.com/css?family=Roboto+Slab' rel='stylesheet' type='text/css'>
		<link href="https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:ital,wght@0,100;1,700&family=Merriweather&family=Merriweather+Sans&family=Open+Sans&family=Poppins:ital@1&family=Roboto:ital,wght@0,400;1,300;1,900&display=swap" rel="stylesheet"> 
        <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
        <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
        <link href="jquery.smartmenus.bootstrap.css" rel="stylesheet">
        <script type="text/javascript" src="jquery.smartmenus.js"></script>
        <!-- SmartMenus jQuery Bootstrap Addon -->
        <script type="text/javascript" src="jquery.smartmenus.bootstrap.js"></script>
        <!-- SmartMenus jQuery plugin -->
    </head>
    <body style="font-family: 'Merriweather', serif;">
        <nav class="navbar navbar-default" role="navigation">
            <div class="container">
                <div class="navbar-header">
                    <a class="navbar-brand">HElib Implementing Homomorphic Encryption</a>
                </div>
            </div>
        </nav>
        <div id="top"><!-- do not remove this div, it is closed by doxygen! -->
            <div class="content" id="content">
                <div class="container">
                    <div class="row">
                        <div class="col-sm-12 panel " style="padding-bottom: 15px;">
                            <div style="margin-bottom: 15px;">
<!-- end header part -->
<!-- Generated by Doxygen 1.8.18 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
var searchBox = new SearchBox("searchBox", "search",false,'Search');
/* @license-end */
</script>
<script type="text/javascript" src="menudata.js"></script>
<script type="text/javascript" src="menu.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
$(function() {
  initMenu('',true,false,'search.php','Search');
  $(document).ready(function() { init_search(); });
});
/* @license-end */</script>
<div id="main-nav"></div>
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
     onmouseover="return searchBox.OnSearchSelectShow()"
     onmouseout="return searchBox.OnSearchSelectHide()"
     onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>

<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0" 
        name="MSearchResults" id="MSearchResults">
</iframe>
</div>

<div id="nav-path" class="navpath">
  <ul>
<li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_d0c4ae63660968bf6b1c77a1e8aecf95.html">helib</a></li>  </ul>
</div>
</div><!-- top -->
<div class="header">
  <div class="headertitle">
<div class="title">tableLookup.h</div>  </div>
</div><!--header-->
<div class="contents">
<a href="table_lookup_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/* Copyright (C) 2012-2020 IBM Corp.</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * This program is Licensed under the Apache License, Version 2.0</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * (the &quot;License&quot;); you may not use this file except in compliance</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * with the License. You may obtain a copy of the License at</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *   http://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * Unless required by applicable law or agreed to in writing, software</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> * See the License for the specific language governing permissions and</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment"> * limitations under the License. See accompanying LICENSE file.</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#ifndef HELIB_TABLELOOKUP_H</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#define HELIB_TABLELOOKUP_H</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160; </div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#include &lt;functional&gt;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="_encrypted_array_8h.html">helib/EncryptedArray.h</a>&gt;</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="_ct_ptrs_8h.html">helib/CtPtrs.h</a>&gt;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160; </div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacehelib.html">helib</a> {</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160; </div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="comment">// inline void convert(Ctxt&amp; a, const Ctxt&amp; b) { a=b; }</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160; </div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="keywordtype">void</span> <a class="code" href="namespacehelib.html#aa13b0418c17fe6b26a2006507d2b57ac">computeAllProducts</a>(<a class="code" href="namespacehelib.html#afac4e5ae4b272f9ffd07daee26285dad">CtPtrs</a>&amp; products,</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;                        <span class="keyword">const</span> <a class="code" href="namespacehelib.html#afac4e5ae4b272f9ffd07daee26285dad">CtPtrs</a>&amp; array,</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;                        std::vector&lt;zzX&gt;* unpackSlotEncoding = <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160; </div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="keywordtype">void</span> <a class="code" href="namespacehelib.html#a57a5ec00207d3ca4206aaa810e04dc5f">tableLookup</a>(Ctxt&amp; out,</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;                 <span class="keyword">const</span> std::vector&lt;zzX&gt;&amp; table,</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;                 <span class="keyword">const</span> <a class="code" href="namespacehelib.html#afac4e5ae4b272f9ffd07daee26285dad">CtPtrs</a>&amp; idx,</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;                 std::vector&lt;zzX&gt;* unpackSlotEncoding = <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160; </div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="keywordtype">void</span> <a class="code" href="namespacehelib.html#a5c931bc04df2c12ffb4e48ae6eb7b404">tableWriteIn</a>(<span class="keyword">const</span> <a class="code" href="namespacehelib.html#afac4e5ae4b272f9ffd07daee26285dad">CtPtrs</a>&amp; table,</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;                  <span class="keyword">const</span> <a class="code" href="namespacehelib.html#afac4e5ae4b272f9ffd07daee26285dad">CtPtrs</a>&amp; idx,</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;                  std::vector&lt;zzX&gt;* unpackSlotEncoding = <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160; </div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="keywordtype">void</span> <a class="code" href="namespacehelib.html#add048fff3de003ad2b670a9ae3ed6f2b">buildLookupTable</a>(std::vector&lt;zzX&gt;&amp; T, <span class="comment">// encoded result is returned in T</span></div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;                      std::function&lt;<span class="keywordtype">double</span>(<span class="keywordtype">double</span>)&gt; f,</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;                      <span class="keywordtype">long</span> nbits_in, <span class="comment">// number of precision bits</span></div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;                      <span class="keywordtype">long</span> scale_in, <span class="comment">// scaling factor</span></div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;                      <span class="keywordtype">long</span> sign_in,  <span class="comment">// 1: 2&#39;s complement signed, 0: unsigned</span></div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;                      <span class="keywordtype">long</span> nbits_out,</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;                      <span class="keywordtype">long</span> scale_out,</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;                      <span class="keywordtype">long</span> sign_out,</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;                      <span class="keyword">const</span> EncryptedArray&amp; ea);</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160; </div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;} <span class="comment">// namespace helib</span></div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160; </div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;<span class="preprocessor">#endif // ifndef HELIB_TABLELOOKUP_H</span></div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="a_ct_ptrs_8h_html"><div class="ttname"><a href="_ct_ptrs_8h.html">CtPtrs.h</a></div><div class="ttdoc">Unified interface for vector of pointers to ciphertexts.</div></div>
<div class="ttc" id="anamespacehelib_html_add048fff3de003ad2b670a9ae3ed6f2b"><div class="ttname"><a href="namespacehelib.html#add048fff3de003ad2b670a9ae3ed6f2b">helib::buildLookupTable</a></div><div class="ttdeci">void buildLookupTable(std::vector&lt; zzX &gt; &amp;T, std::function&lt; double(double)&gt; f, long nbits_in, long scale_in, long sign_in, long nbits_out, long scale_out, long sign_out, const EncryptedArray &amp;ea)</div><div class="ttdoc">Built a table-lookup for a function in fixed-point representation.</div><div class="ttdef"><b>Definition:</b> tableLookup.cpp:139</div></div>
<div class="ttc" id="a_encrypted_array_8h_html"><div class="ttname"><a href="_encrypted_array_8h.html">EncryptedArray.h</a></div><div class="ttdoc">Data-movement operations on encrypted arrays of slots.</div></div>
<div class="ttc" id="anamespacehelib_html"><div class="ttname"><a href="namespacehelib.html">helib</a></div><div class="ttdef"><b>Definition:</b> apiAttributes.h:21</div></div>
<div class="ttc" id="anamespacehelib_html_aa13b0418c17fe6b26a2006507d2b57ac"><div class="ttname"><a href="namespacehelib.html#aa13b0418c17fe6b26a2006507d2b57ac">helib::computeAllProducts</a></div><div class="ttdeci">void computeAllProducts(CtPtrs &amp;products, const CtPtrs &amp;array, std::vector&lt; zzX &gt; *unpackSlotEncoding=nullptr)</div><div class="ttdef"><b>Definition:</b> tableLookup.cpp:37</div></div>
<div class="ttc" id="anamespacehelib_html_a5c931bc04df2c12ffb4e48ae6eb7b404"><div class="ttname"><a href="namespacehelib.html#a5c931bc04df2c12ffb4e48ae6eb7b404">helib::tableWriteIn</a></div><div class="ttdeci">void tableWriteIn(const CtPtrs &amp;table, const CtPtrs &amp;idx, std::vector&lt; zzX &gt; *unpackSlotEncoding=nullptr)</div><div class="ttdef"><b>Definition:</b> tableLookup.cpp:109</div></div>
<div class="ttc" id="anamespacehelib_html_a57a5ec00207d3ca4206aaa810e04dc5f"><div class="ttname"><a href="namespacehelib.html#a57a5ec00207d3ca4206aaa810e04dc5f">helib::tableLookup</a></div><div class="ttdeci">void tableLookup(Ctxt &amp;out, const std::vector&lt; zzX &gt; &amp;table, const CtPtrs &amp;idx, std::vector&lt; zzX &gt; *unpackSlotEncoding=nullptr)</div><div class="ttdef"><b>Definition:</b> tableLookup.cpp:83</div></div>
<div class="ttc" id="anamespacehelib_html_afac4e5ae4b272f9ffd07daee26285dad"><div class="ttname"><a href="namespacehelib.html#afac4e5ae4b272f9ffd07daee26285dad">helib::CtPtrs</a></div><div class="ttdeci">PtrVector&lt; Ctxt &gt; CtPtrs</div><div class="ttdef"><b>Definition:</b> CtPtrs.h:25</div></div>
<!-- HTML footer for doxygen 1.8.8-->
<!-- start footer part -->
</div>
</div>
</div>
</div>
</div>
<hr class="footer"/><address class="footer"><small>
Generated by &#160;<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.18
</small></address>
</body>
        <script type="text/javascript" src="doxy-boot.js"></script>
</html>
